| Southwater to Oswego (Illinois) | 3,990.64 mi (6,422.32 km) |
| Southwater to Oswego (New York) | 3,448.51 mi (5,549.83 km) |
| Southwater to Otsego (Minnesota) | 4,020.92 mi (6,471.04 km) |
| Southwater to Ottawa (Illinois) | 4,024.60 mi (6,476.96 km) |
| Southwater to Ottawa (Kansas) | 4,401.91 mi (7,084.18 km) |
| Southwater to Ottumwa (Iowa) | 4,176.99 mi (6,722.22 km) |
| Southwater to Overland (Missouri) | 4,209.79 mi (6,775.00 km) |
| Southwater to Overland Park (Kansas) | 4,365.96 mi (7,026.34 km) |
| Southwater to Overlea (Maryland) | 3,624.43 mi (5,832.96 km) |
| Southwater to Oviedo (Florida) | 4,322.81 mi (6,956.88 km) |
| Southwater to Owasso (Oklahoma) | 4,538.64 mi (7,304.23 km) |
| Southwater to Owatonna (Minnesota) | 4,061.73 mi (6,536.72 km) |
| Southwater to Owensboro (Kentucky) | 4,126.88 mi (6,641.57 km) |
| Southwater to Owings Mills (Maryland) | 3,633.60 mi (5,847.72 km) |
| Southwater to Owosso (Michigan) | 3,770.73 mi (6,068.40 km) |
